Improvement in lamps



w. w. JACOBS.

Lamp.

No 85,099. Patented Dec. 22; 1868.

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' NJEIEas FMOTD-UTHOGRAPHER. WASMNGTON, D. c.

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W. W. JACOB S, OF 'HA'GE RSTOWN, MARYLAND. I

Letters Patent N20; 85,099, dated December 22, 1 1868.

IMPROVEMENT IN LAMPS.

v The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, W. W; JACOBS, oi H age'rstown, in the county of Washington, and State of Maryland,

have invented a new and improved Lamp; and that the following description, taken in connection withthe accompanying drawing hereinafter referred to, forms a full and exact specification of the same,'wln rein I have set forth the nature and principles of my said improvements, by-which my invention may be distinguished from all'others of a similar class, together with such parts as I claim, and desire to have secured ;to me by Letters Patent.

Thisinveution relates to a new and improved lamp, oflthatclass which is designed for burning coal-oil and other similar hydrocarbons, which require a large amount of oxygen to support proper combustion for illuminating-purposes.

The object of theiuventio'n is to obtain a lamp whereby said hydrocarbons may be burned without the usual draught chimney.

Theaccompanying drawing represents a side sectional view of my invention.

The invention consists of' an ordinary glass or metallic lamp enclosed with an outer shell, or an opening, through the main reservoir or oil-cup, which is placed upon a hollow tube, or the main stem of the lamp, through'w'hich I force au'ascending current of air, supplying the necessary amount of oxygen to the illuminatingeflame, thereby producing perfect combusstion, and a soft, mellow light, h'ythe meansof a small flame oflight at the bottom of the main stem'of the lamp, which flame is required to be very small,-and kept at the proper height to produce the required amount of heat to supply the flame with the required an ountof oxygen to feedthe flame. r This I accomplish by the use of ame'tallic tube, leading from the main reservoir or oil-cup.

This tube is properly packed, and furnished with a stop-cock to regulate the required amount. of oil to feed-the burning flame atthe bottom-of the main stem the flame protrudes, being cut down on both sides, ona level with the top of wick-tube, for the purpose of v spreading the flame.

G is the ratchet-wheeh D is the outer covering or flange of burner, extending to, the top of oil-chamber, and fitting closely, so as.

to let none of the ascending air escape.

E is the collar and screw of burner.

F is the wick.

G is the vessel tocontain the oil.

H is 'the opening to conduct the-oil into the oil-cup G.

I is an opening at the top of the oil-cup, to let the air escape,-

the cup is being filled with oil.

The arrows represent the ascending current ofair from the heat of the small burner Nat the baseof the lamp; and in the bottom of the hollow or tubular support J is a metallic tube to conduct oilfrom the reservoir G Gto the burner N.

L is, the stop-cock, to regulate the of oil required to feed the'flame at N.

M is that part of the tube K which is securely desired, amount packed with any porous material to contain the oil,

when the stop-cock is closed and the flame N is out,

or the lowerilamp not burning.

O is a slide onthe'stem of the lamp, .to raise or lower-for the purpose of lighting and. regulating the P is theperforated bottom, to conduct fresh air into the lower endof the tubular support J.

itlis consumed. By this arrangement the gas is allowed to escape from the reservoir explosion of the lamp.

Having thus described my invention, I claim as new, and desire to secure by Letters and prevent the Patent The metallic tube or pipe K and the stop-cock L, for the purpose of supplying the lower burner N from the fountain or reservoir G ofthe lamp, as set forth.

The above specification of my 'invention signed by me, this 30th day of April, 1867.

Witnesses: vW. W. JACOBS.

HENRY YINGLING,

' M. S. Bunsen. 

